package com.yupi.springbootinit.controller;

import cn.hutool.core.io.FileUtil;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.yupi.springbootinit.annotation.AuthCheck;
import com.yupi.springbootinit.bizmq.BiMessageProducer;
import com.yupi.springbootinit.common.BaseResponse;
import com.yupi.springbootinit.common.DeleteRequest;
import com.yupi.springbootinit.common.ErrorCode;
import com.yupi.springbootinit.common.ResultUtils;
import com.yupi.springbootinit.constant.CommonConstant;
import com.yupi.springbootinit.constant.UserConstant;
import com.yupi.springbootinit.exception.BusinessException;
import com.yupi.springbootinit.exception.ThrowUtils;
import com.yupi.springbootinit.manager.AiManager;
import com.yupi.springbootinit.manager.RedisLimiterManager;
import com.yupi.springbootinit.model.dto.chart.*;
import com.yupi.springbootinit.model.entity.Chart;
import com.yupi.springbootinit.model.entity.User;
import com.yupi.springbootinit.model.vo.BiResponse;
import com.yupi.springbootinit.service.ChartService;
import com.yupi.springbootinit.service.UserService;
import com.yupi.springbootinit.utils.EasyExcelUtils;
import com.yupi.springbootinit.utils.SqlUtils;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.ObjectUtils;
import org.apache.commons.lang3.StringUtils;

import org.springframework.beans.BeanUtils;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import java.util.Arrays;
import java.util.List;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ThreadPoolExecutor;

/**
 * 图表接口
 */
@RestController
@RequestMapping("/chart")
@Slf4j
public class ChartController {

    @Resource
    private ChartService chartService;

    @Resource
    private UserService userService;

    @Resource
    private AiManager aiManager;

    @Resource
    private ThreadPoolExecutor threadPoolExecutor;

    @Resource
    private RedisLimiterManager redisLimiterManager;

    @Resource
    private BiMessageProducer biMessageProducer;

    /**
     * 创建
     *
     * @param chartAddRequest
     * @param request
     * @return
     */
    @PostMapping("/add")
    public BaseResponse<Long> addChart(@RequestBody ChartAddRequest chartAddRequest, HttpServletRequest request) {
        if (chartAddRequest == null) {
            throw new BusinessException(ErrorCode.PARAMS_ERROR);
        }
        Chart chart = new Chart();
        BeanUtils.copyProperties(chartAddRequest, chart);
        User loginUser = userService.getLoginUser(request);
        chart.setUserId(loginUser.getId());
        boolean result = chartService.save(chart);
        ThrowUtils.throwIf(!result, ErrorCode.OPERATION_ERROR);
        long newChartId = chart.getId();
        return ResultUtils.success(newChartId);
    }

    /**
     * 删除
     *
     * @param deleteRequest
     * @param request
     * @return
     */
    @PostMapping("/delete")
    public BaseResponse<Boolean> deleteChart(@RequestBody DeleteRequest deleteRequest, HttpServletRequest request) {
        if (deleteRequest == null || deleteRequest.getId() <= 0) {
            throw new BusinessException(ErrorCode.PARAMS_ERROR);
        }
        User user = userService.getLoginUser(request);
        long id = deleteRequest.getId();
        // 判断是否存在
        Chart oldChart = chartService.getById(id);
        ThrowUtils.throwIf(oldChart == null, ErrorCode.NOT_FOUND_ERROR);
        // 仅本人或管理员可删除
        if (!oldChart.getUserId().equals(user.getId()) && !userService.isAdmin(request)) {
            throw new BusinessException(ErrorCode.NO_AUTH_ERROR);
        }
        boolean b = chartService.removeById(id);
        return ResultUtils.success(b);
    }

    /**
     * 更新（仅管理员）
     *
     * @param chartUpdateRequest
     * @return
     */
    @PostMapping("/update")
    @AuthCheck(mustRole = UserConstant.ADMIN_ROLE)
    public BaseResponse<Boolean> updateChart(@RequestBody ChartUpdateRequest chartUpdateRequest) {
        if (chartUpdateRequest == null || chartUpdateRequest.getId() <= 0) {
            throw new BusinessException(ErrorCode.PARAMS_ERROR);
        }
        Chart chart = new Chart();
        BeanUtils.copyProperties(chartUpdateRequest, chart);
        long id = chartUpdateRequest.getId();
        // 判断是否存在
        Chart oldChart = chartService.getById(id);
        ThrowUtils.throwIf(oldChart == null, ErrorCode.NOT_FOUND_ERROR);
        boolean result = chartService.updateById(chart);
        return ResultUtils.success(result);
    }

    /**
     * 根据 id 获取
     *
     * @param id
     * @return
     */
    @GetMapping("/get")
    public BaseResponse<Chart> getChartById(long id, HttpServletRequest request) {
        if (id <= 0) {
            throw new BusinessException(ErrorCode.PARAMS_ERROR);
        }
        Chart chart = chartService.getById(id);
        if (chart == null) {
            throw new BusinessException(ErrorCode.NOT_FOUND_ERROR);
        }
        return ResultUtils.success(chart);
    }


    /**
     * 分页获取列表（仅管理员）
     *
     * @param chartQueryRequest
     * @return
     */
    @PostMapping("/list/page")
    @AuthCheck(mustRole = UserConstant.ADMIN_ROLE)
    public BaseResponse<Page<Chart>> listChartByPage(@RequestBody ChartQueryRequest chartQueryRequest) {
        long current = chartQueryRequest.getCurrent();
        long size = chartQueryRequest.getPageSize();
        Page<Chart> chartPage = chartService.page(new Page<>(current, size),
                getQueryWrapper(chartQueryRequest));
        return ResultUtils.success(chartPage);
    }

    /**
     * 分页获取列表（封装类）
     *
     * @param chartQueryRequest
     * @param request
     * @return
     */
    @PostMapping("/list/page/vo")
    public BaseResponse<Page<Chart>> listChartByPage(@RequestBody ChartQueryRequest chartQueryRequest,
                                                     HttpServletRequest request) {
        long current = chartQueryRequest.getCurrent();
        long size = chartQueryRequest.getPageSize();
        // 限制爬虫
        ThrowUtils.throwIf(size > 20, ErrorCode.PARAMS_ERROR);
        Page<Chart> chartPage = chartService.page(new Page<>(current, size),
                getQueryWrapper(chartQueryRequest));
        return ResultUtils.success(chartPage);
    }

    /**
     * 分页获取当前用户创建的资源列表
     *
     * @param chartQueryRequest
     * @param request
     * @return
     */
    @PostMapping("/my/list/page")
    public BaseResponse<Page<Chart>> listMyChartByPage(@RequestBody ChartQueryRequest chartQueryRequest,
                                                       HttpServletRequest request) {
        if (chartQueryRequest == null) {
            throw new BusinessException(ErrorCode.PARAMS_ERROR);
        }
        User loginUser = userService.getLoginUser(request);
        chartQueryRequest.setUserId(loginUser.getId());
        long current = chartQueryRequest.getCurrent();
        long size = chartQueryRequest.getPageSize();
        // 限制爬虫
        ThrowUtils.throwIf(size > 20, ErrorCode.PARAMS_ERROR);
        Page<Chart> chartPage = chartService.page(new Page<>(current, size),
                getQueryWrapper(chartQueryRequest));
        return ResultUtils.success(chartPage);
    }


    /**
     * 分页搜索（从 ES 查询，封装类）
     *
     * @param chartQueryRequest
     * @param request
     * @return
     */
    @PostMapping("/search/page/vo")
    public BaseResponse<Page<Chart>> searchChartByPage(@RequestBody ChartQueryRequest chartQueryRequest,
                                                       HttpServletRequest request) {
        long size = chartQueryRequest.getPageSize();
        // 限制爬虫
        ThrowUtils.throwIf(size > 20, ErrorCode.PARAMS_ERROR);
        return ResultUtils.success(new Page<>());
    }

    /**
     * 编辑（用户）
     *
     * @param chartEditRequest
     * @param request
     * @return
     */
    @PostMapping("/edit")
    public BaseResponse<Boolean> editChart(@RequestBody ChartEditRequest chartEditRequest, HttpServletRequest request) {
        if (chartEditRequest == null || chartEditRequest.getId() <= 0) {
            throw new BusinessException(ErrorCode.PARAMS_ERROR);
        }
        Chart chart = new Chart();
        BeanUtils.copyProperties(chartEditRequest, chart);
        User loginUser = userService.getLoginUser(request);
        long id = chartEditRequest.getId();
        // 判断是否存在
        Chart oldChart = chartService.getById(id);
        ThrowUtils.throwIf(oldChart == null, ErrorCode.NOT_FOUND_ERROR);
        // 仅本人或管理员可编辑
        if (!oldChart.getUserId().equals(loginUser.getId()) && !userService.isAdmin(loginUser)) {
            throw new BusinessException(ErrorCode.NO_AUTH_ERROR);
        }
        boolean result = chartService.updateById(chart);
        return ResultUtils.success(result);
    }

    /**
     * 获取查询包装类
     *
     * @param chartQueryRequest
     * @return
     */
    private QueryWrapper<Chart> getQueryWrapper(ChartQueryRequest chartQueryRequest) {
        QueryWrapper<Chart> queryWrapper = new QueryWrapper<>();
        if (chartQueryRequest == null) {
            return queryWrapper;
        }

        Long id = chartQueryRequest.getId();
        String name = chartQueryRequest.getName();
        String goal = chartQueryRequest.getGoal();
        String chartType = chartQueryRequest.getChartType();
        Long userId = chartQueryRequest.getUserId();
        String sortField = chartQueryRequest.getSortField();
        String sortOrder = chartQueryRequest.getSortOrder();


        queryWrapper.eq(id != null && id > 0, "id", id);
        queryWrapper.eq(StringUtils.isNotBlank(goal), "goal", goal);
        queryWrapper.like(StringUtils.isNotBlank(name), "name", name);
        queryWrapper.eq(StringUtils.isNotBlank(chartType), "chartType", chartType);
        queryWrapper.eq(ObjectUtils.isNotEmpty(userId), "userId", userId);
        queryWrapper.orderBy(SqlUtils.validSortField(sortField), sortOrder.equals(CommonConstant.SORT_ORDER_ASC),
                sortField);
        return queryWrapper;
    }


    /**
     * 智能分析
     *
     * @param multipartFile
     * @param request
     * @return
     */
    @PostMapping("/gen")
    public BaseResponse<BiResponse> genChartByAi(@RequestPart("file") MultipartFile multipartFile,
                                                 GenChartByAiRequest genChartByAiRequest, HttpServletRequest request) {
        User loginUser = userService.getLoginUser(request);
        if (loginUser == null || loginUser.getId() <= 0) {
            throw new BusinessException(ErrorCode.NOT_LOGIN_ERROR);
        }
        String chartName = genChartByAiRequest.getName();
        String goal = genChartByAiRequest.getGoal();
        String chartType = genChartByAiRequest.getChartType();
        //校验
        ThrowUtils.throwIf(StringUtils.isBlank(goal), ErrorCode.PARAMS_ERROR, "目标为空");
        ThrowUtils.throwIf(StringUtils.isNotBlank(chartName) && chartName.length() > 100, ErrorCode.PARAMS_ERROR, "名称过长");
        // 校验文件
        long size = multipartFile.getSize();
        String originalFilename = multipartFile.getOriginalFilename();
        //校验文件大小
        final long ONE_MB = 1 * 1024 * 1024L;
        ThrowUtils.throwIf(size > ONE_MB, ErrorCode.PARAMS_ERROR, "文件超过 1MB");
        //校验文件后缀 xxx.excel
        String suffix = FileUtil.getSuffix(originalFilename);
        //文件后缀白名单
        final List<String> validFileSuffixList = Arrays.asList("xls", "xlsx");
        if (!validFileSuffixList.contains(suffix)) {
            throw new BusinessException(ErrorCode.PARAMS_ERROR, "上传文件格式不正确");
        }

        // 校验完文件之后，在这里做一个限流，针对该方法的限流
        redisLimiterManager.doRateLimit("genChartByAi_" + loginUser.getId());

        //这里直接调用现有模型https://www.yucongming.com/
        Long biModelId = 1774726859226230785L;

        //用户输入
        StringBuilder userInput = new StringBuilder();
        String userGoal = goal;
        if (StringUtils.isNotBlank(chartType)) {
            userGoal += ",请使用" + chartType;
        }
        userInput.append("分析需求:").append("\n");
        userInput.append(userGoal).append("\n");
        // 压缩后的数据
        //读取用户上传的excel 文件， 进行处理，得到csv格式的文件
        String csvData = EasyExcelUtils.excelToCSV(multipartFile);
        userInput.append("原始数据:").append("\n");
        userInput.append(csvData).append("\n");
        String chartString = aiManager.doChat(biModelId, userInput.toString());
        //将得到的 chartString处理
        String[] splits = chartString.split("【【【【【");
        if (splits.length > 3) {
            throw new BusinessException(ErrorCode.SYSTEM_ERROR, "AI 生成错误");
        }
        String genChart = splits[1].trim();
        String genResult = splits[2].trim();


        //将数据插入数据库
        Chart chart = new Chart();
        chart.setName(chartName);
        chart.setGoal(goal);
        chart.setChartData(csvData);
        chart.setChartType(chartType);
        chart.setGenChart(genChart);
        chart.setGenResult(genResult);
        chart.setUserId(loginUser.getId());

        boolean saveResult = chartService.save(chart);
        ThrowUtils.throwIf(!saveResult, ErrorCode.SYSTEM_ERROR, "图表保存失败");

        BiResponse biResponse = new BiResponse();
        biResponse.setGenChart(genChart);
        biResponse.setGenResult(genResult);
        return ResultUtils.success(biResponse);
    }


    /**
     * 异步智能分析
     *
     * @param multipartFile
     * @param request
     * @return
     */
    @PostMapping("/gen/async")
    public BaseResponse<BiResponse> genChartByAiAsync(@RequestPart("file") MultipartFile multipartFile,
                                                      GenChartByAiRequest genChartByAiRequest, HttpServletRequest request) {
        User loginUser = userService.getLoginUser(request);
        if (loginUser == null || loginUser.getId() <= 0) {
            throw new BusinessException(ErrorCode.NOT_LOGIN_ERROR);
        }
        String chartName = genChartByAiRequest.getName();
        String goal = genChartByAiRequest.getGoal();
        String chartType = genChartByAiRequest.getChartType();
        //校验
        ThrowUtils.throwIf(StringUtils.isBlank(goal), ErrorCode.PARAMS_ERROR, "目标为空");
        ThrowUtils.throwIf(StringUtils.isNotBlank(chartName) && chartName.length() > 100, ErrorCode.PARAMS_ERROR, "名称过长");
        // 校验文件
        long size = multipartFile.getSize();
        String originalFilename = multipartFile.getOriginalFilename();
        //校验文件大小
        final long ONE_MB = 1 * 1024 * 1024L;
        ThrowUtils.throwIf(size > ONE_MB, ErrorCode.PARAMS_ERROR, "文件超过 1MB");
        //校验文件后缀 xxx.excel
        String suffix = FileUtil.getSuffix(originalFilename);
        //文件后缀白名单
        final List<String> validFileSuffixList = Arrays.asList("xls", "xlsx");
        if (!validFileSuffixList.contains(suffix)) {
            throw new BusinessException(ErrorCode.PARAMS_ERROR, "上传文件格式不正确");
        }

        // 校验完文件之后，在这里做一个限流，针对该方法的限流
        redisLimiterManager.doRateLimit("genChartByAi_" + loginUser.getId());

        //这里直接调用现有模型https://www.yucongming.com/
        Long biModelId = 1774726859226230785L;

        //用户输入
        StringBuilder userInput = new StringBuilder();
        String userGoal = goal;
        if (StringUtils.isNotBlank(chartType)) {
            userGoal += ",请使用" + chartType;
        }
        userInput.append("分析需求:").append("\n");
        userInput.append(userGoal).append("\n");
        // 压缩后的数据
        //读取用户上传的excel 文件， 进行处理，得到csv格式的文件
        String csvData = EasyExcelUtils.excelToCSV(multipartFile);
        userInput.append("原始数据:").append("\n");
        userInput.append(csvData).append("\n");

        //将数据插入数据库
        Chart chart = new Chart();
        chart.setName(chartName);
        chart.setGoal(goal);
        chart.setChartData(csvData);
        chart.setChartType(chartType);
        chart.setChartStatus("wait");
        chart.setUserId(loginUser.getId());

        boolean saveResult = chartService.save(chart);
        ThrowUtils.throwIf(!saveResult, ErrorCode.SYSTEM_ERROR, "图表保存失败");

        //这里通过线程实现异步操作   队列满后，需要抛出业务异常，不能直接使用线程默认的异常
        CompletableFuture.runAsync(() -> {
            // 先修改图表的任务状态为 “执行中 running”，任务执行完毕后修改状态为 succeed，执行失败也要修改 failed
            Chart updateChart = new Chart();
            updateChart.setId(chart.getId());
            updateChart.setChartStatus("running");
            boolean updateResult = chartService.updateById(updateChart);
            if (!updateResult) {
                //修改图表状态失败，也要将 图表状态修改为 failed
                chartService.handleChartUpdateError(chart.getId(), "状态改为 running失败");
                return;
            }

            //调用AI
            String chartString = aiManager.doChat(biModelId, userInput.toString());
            //将得到的 chartString处理
            String[] splits = chartString.split("【【【【【");
            if (splits.length > 3) {
                throw new BusinessException(ErrorCode.SYSTEM_ERROR, "AI 生成错误");
            }
            String genChart = splits[1].trim();
            String genResult = splits[2].trim();
            Chart resultChart = new Chart();
            resultChart.setId(chart.getId());
            resultChart.setGenChart(genChart);
            resultChart.setGenResult(genResult);
            resultChart.setChartStatus("succeed");
            boolean result = chartService.updateById(resultChart);
            if (!result) {
                chartService.handleChartUpdateError(chart.getId(), "状态改为 succeed失败");
                return;
            }
        }, threadPoolExecutor);


        BiResponse biResponse = new BiResponse();
        biResponse.setChartId(chart.getId());
        return ResultUtils.success(biResponse);
    }




    /**
     * 智能分析(异步消息队列)
     *
     * @param multipartFile
     * @param request
     * @return
     */
    @PostMapping("/gen/async/mq")
    public BaseResponse<BiResponse> genChartByAiAsyncMq(@RequestPart("file") MultipartFile multipartFile,
                                                      GenChartByAiRequest genChartByAiRequest, HttpServletRequest request) {
        User loginUser = userService.getLoginUser(request);
        if (loginUser == null || loginUser.getId() <= 0) {
            throw new BusinessException(ErrorCode.NOT_LOGIN_ERROR);
        }
        String chartName = genChartByAiRequest.getName();
        String goal = genChartByAiRequest.getGoal();
        String chartType = genChartByAiRequest.getChartType();
        //校验
        ThrowUtils.throwIf(StringUtils.isBlank(goal), ErrorCode.PARAMS_ERROR, "目标为空");
        ThrowUtils.throwIf(StringUtils.isNotBlank(chartName) && chartName.length() > 100, ErrorCode.PARAMS_ERROR, "名称过长");
        // 校验文件
        long size = multipartFile.getSize();
        String originalFilename = multipartFile.getOriginalFilename();
        //校验文件大小
        final long ONE_MB = 1 * 1024 * 1024L;
        ThrowUtils.throwIf(size > ONE_MB, ErrorCode.PARAMS_ERROR, "文件超过 1MB");
        //校验文件后缀 xxx.excel
        String suffix = FileUtil.getSuffix(originalFilename);
        //文件后缀白名单
        final List<String> validFileSuffixList = Arrays.asList("xls", "xlsx");
        if (!validFileSuffixList.contains(suffix)) {
            throw new BusinessException(ErrorCode.PARAMS_ERROR, "上传文件格式不正确");
        }

        // 校验完文件之后，在这里做一个限流，针对该方法的限流
        redisLimiterManager.doRateLimit("genChartByAi_" + loginUser.getId());
        // 压缩后的数据
        //读取用户上传的excel 文件， 进行处理，得到csv格式的文件
        String csvData = EasyExcelUtils.excelToCSV(multipartFile);

        //将数据插入数据库
        Chart chart = new Chart();
        chart.setName(chartName);
        chart.setGoal(goal);
        chart.setChartData(csvData);
        chart.setChartType(chartType);
        chart.setChartStatus("wait");
        chart.setUserId(loginUser.getId());

        boolean saveResult = chartService.save(chart);
        ThrowUtils.throwIf(!saveResult, ErrorCode.SYSTEM_ERROR, "图表保存失败");

        long newChartId = chart.getId();
        //只需要给发送消息的方法传入 图表id。 压缩消息的空间
        biMessageProducer.sendMessage(String.valueOf(newChartId));

        BiResponse biResponse = new BiResponse();
        biResponse.setChartId(newChartId);
        return ResultUtils.success(biResponse);
    }

}
